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The Bard 8602-013 exhaust damper assembly and rod is an OEM airflow component used in Bard wall-mounted packaged HVAC units equipped with ventilation or economizer functions. It mounts in the exhaust air path to open and close as the unit regulates building relief air, helping maintain proper ventilation balance and preventing uncontrolled exhaust when the damper is commanded closed. If your existing damper is bent, binding, or not tracking correctly, replacing it with the correct Bard 8602-013 assembly helps restore smooth damper movement and reliable exhaust control; always confirm compatibility by matching your unit model and serial to the Bard parts manual before ordering.